Earlier quoted context omitted.
Even accounting for the times things have gone “catastrophically wrong”, nuclear is many orders of magnitude safer per unit of energy than every other energy source except solar. https://ourworldindata.org/grapher/death-rates-from-energy-p...
These are death rates with the current saturation of plants. If we wanted to cover all of Europe, a much more densely populated area, with nuclear, the deaths (and other negative consequences) would be far greater, no?
Even with that being said, those safety numbers have held even with China building large numbers of reactors in relatively dense areas. I'd be surprised if European reactors turned out to pose much of a higher risk.